Attenuation of the herbicidal activities of glufosinate-ammonium and imazapyr in two soils

Ismail Sahid, A. R. Ahmad

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The persistence of glufosinate-ammonium and imazapyr in soil was examined under laboratory and field conditions using Brassica rapa L. (rape) as the bioassay species. Glufosinate-ammonium and imazapyr degraded faster in the clay loam soil than in clay soil. The bioactive half-life (BH) of glufosinate-ammonium was significantly different between each of the moisture levels (based on dry weight basis) in both soils. The BH of imazapyr decreased with increasing moisture levels in the clay soil, but soil moisture content in the range 20-80% did not significantly affect the BH of imazapyr in the clay loam. At 25°C, the BH of glufosinate-ammonium was 22 days and 20 days in the clay and clay loam soils, respectively. The BH of imazapyr at 35°C was 7 days and 5 days in the clay and clay loam soils, respectively. Under field conditions, attenuation rates of glufosinate-ammonium and imazapyr (except in clay loam) was faster in soil covered with grasses than in uncovered soil.

Original languageEnglish
Pages (from-to)279-285
Number of pages7
JournalAgriculture, Ecosystems and Environment
Volume47
Issue number4
DOIs
Publication statusPublished - 1994

Fingerprint

glufosinate
imazapyr
clay loam
ammonium
half life
clay loam soils
clay
soil
clay soils
clay soil
moisture
Brassica rapa
soil water content
bioassays
bioassay
moisture content
grasses
persistence
soil moisture
grass

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Attenuation of the herbicidal activities of glufosinate-ammonium and imazapyr in two soils. / Sahid, Ismail; Ahmad, A. R.

In: Agriculture, Ecosystems and Environment, Vol. 47, No. 4, 1994, p. 279-285.

Research output: Contribution to journalArticle

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